Special vermiculizer for non-magnetic vermicular graphite cast iron, and preparation technology thereof
A technology of vermicular cast iron and preparation process, which is applied in the field of vermicularization of cast iron, which can solve the problems of small control range of vermicularizing agent addition, waste of precious alloys, cumbersome and time-consuming operations, etc., to improve technical performance and reliability, speed and time Effective control, simple and reliable preparation process
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Embodiment 1
[0032] A special vermicular agent for non-magnetic vermicular graphite cast iron, the weight percentage of each component is: 75% of rare earth magnesium alloy, 20% of high-purity graphite powder, and 5% of water glass binder. Its concrete preparation steps are:
[0033] (1) Alloy crushing Rare earth magnesium alloys are crushed mechanically, and the control particle size is <3mm, accounting for 10%, 3-5mm accounting for 20%, and 6-15mm accounting for 70%;
[0034] (2) Mixing of ingredients Prepare rare earth magnesium alloy, high-purity graphite powder, and water glass according to the above proportions. First, add rare earth magnesium alloy to the stirrer and stir. While stirring, spray water glass evenly on the surface of rare earth magnesium alloy. After the agent is evenly attached to the surface of the rare earth magnesium alloy, the graphite powder is added to the mixer and mixed, and the control time is 15 minutes;
[0035] (3) Curing and drying The mixed vermicular a...
Embodiment 2
[0040] A special vermicular agent for non-magnetic vermicular graphite cast iron, the weight percentage of each component is: 77% of rare earth magnesium alloy, 18.5% of high-purity graphite powder, and 4.5% of water glass binder. Its concrete preparation steps are:
[0041] (1) Alloy crushing Rare earth magnesium alloys are crushed mechanically, and the controlled particle size is <3mm, accounting for 8%, 3-5mm accounting for 23%, and 6-15mm accounting for 69%;
[0042] (2) Mixing of ingredients Prepare rare earth magnesium alloy, high-purity graphite powder, and water glass according to the above proportions. First, add rare earth magnesium alloy to the stirrer and stir. While stirring, spray water glass evenly on the surface of rare earth magnesium alloy. After the agent is evenly attached to the surface of the rare earth magnesium alloy, the graphite powder is added to the mixer and mixed, and the control time is 14 minutes;
[0043] (3) Curing and drying The mixed vermic...
Embodiment 3
[0048] A special vermicular agent for non-magnetic vermicular graphite cast iron, the weight percentage of each component is: 80% of rare earth magnesium alloy, 16% of high-purity graphite powder, and 4.0% of water glass binder. Its concrete preparation steps are:
[0049] (1) Alloy crushing Rare earth magnesium alloys are crushed mechanically, and the controlled particle size is <3mm, accounting for 7%, 3-5mm accounting for 25%, and 6-15mm accounting for 68%;
[0050] (2) Mixing of ingredients Prepare rare earth magnesium alloy, high-purity graphite powder, and water glass according to the above proportions. First, add rare earth magnesium alloy to the stirrer and stir. While stirring, spray water glass evenly on the surface of rare earth magnesium alloy. After the agent is evenly attached to the surface of the rare earth magnesium alloy, the graphite powder is added to the mixer and mixed, and the control time is 13 minutes;
[0051] (3) Curing and drying The mixed vermicul...
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